Piperade (Basque Scrambled Eggs)

Ingredients

• 2 tablespoons olive oil
• 1 cup thinly-sliced onion
• 2 green bell peppers, cut into strips
• 1 pound tomatoes, peeled and roughly chopped
• 2 teaspoons chopped garlic
• 2 tablespoons chopped fresh basil
• Salt and pepper
• 4 eggs
• 2 to 4 slices ham, fried or grilled, for serving
• Fried bread croutons, for serving